Searching for Initial Ram Disk Initrd Support information? Find all needed info by using official links provided below.
https://developer.ibm.com/technologies/linux/articles/l-initrd/
The Linux initial RAM disk (initrd) is a temporary root file system that is mounted during system boot to support the two-state boot process. The initrd contains various executables and drivers that permit the real root file system to be mounted, after which the initrd RAM disk is unmounted and its memory freed. In many embedded Linux systems, the initrd is the final root file system. This ...
https://www.kernel.org/doc/html/v4.12/admin-guide/initrd.html
Second, the kernel has to be compiled with RAM disk support and with support for the initial RAM disk enabled. Also, at least all components needed to execute programs from initrd (e.g. executable format and file system) must be compiled into the kernel.
https://en.wikipedia.org/wiki/Initial_ramdisk
In the initrd scheme, the image may be a file system image (optionally compressed), which is made available in a special block device (/dev/ram) that is then mounted as the initial root file system. The driver for that file system must be compiled statically into the kernel.
https://www.techoism.com/linux-initrd-initial-ram-disk/
initrd (initial RAM disk) is a temporary root file system that is mounted during system boot to support the two-state boot process. The initrd is bound to the kernel and loaded as part of the kernel boot procedure.
https://www.cyberciti.biz/tips/understanding-linux-initrd-initial-ram-disk.html
Aug 04, 2006 · In many embedded Linux systems, the initrd is the final root file system. This article explores the initial RAM disk for Linux 2.6, including its creation and use in the Linux kernel. The initial RAM disk (initrd) is an initial root file system that is mounted prior to when the real root file system is …
http://manpages.ubuntu.com/manpages/xenial/man4/initrd.4.html
initrd - boot loader initialized RAM disk CONFIGURATION The /dev/initrd is a read-only block device assigned major number 1 and minor number 250. Typically /dev/initrd is owned by root.disk with mode 0400 (read access by root only).
https://linux.die.net/man/4/initrd
The special file /dev/initrd is a read-only block device. This device is a RAM disk that is initialized (e.g., loaded) by the boot loader before the kernel is started. The kernel then can use /dev/initrd's contents for a two-phase system boot-up.. In the first boot-up phase, the kernel starts up and mounts an initial root file-system from the contents of /dev/initrd (e.g., RAM disk initialized ...
https://www.kernel.org/doc/html/latest/admin-guide/blockdev/ramdisk.html
The RAM disk supports up to 16 RAM disks by default, and can be reconfigured to support an unlimited number of RAM disks (at your own risk). Just change the configuration symbol BLK_DEV_RAM_COUNT in the Block drivers config menu and (re)build the kernel. To use RAM disk support with your system, run ‘./MAKEDEV ram’ from the /dev directory.
https://www.golinuxcloud.com/update-rebuild-initrd-image-centos-rhel-7-8/
Sep 13, 2019 · The initial RAM disk (initrd) is an initial root file system that is mounted prior to when the real root file system is available. The initrd is bound to the kernel and loaded as part of the kernel boot procedure. ... In other words, it contains the necessary executables and system files to support the second-stage boot of a Linux system.
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